Originally Posted by JDR13
The funny thing is that I killed him with 1 blow after stunning him with Aard, pure luck I guess. Not before I had to go back to an earlier save and spend some of my talents differently though…

Aardt is the main trick with The Beast. Also, you must focus only on the Beast, - ignore the pups. If you kill the pups, The Beast will respawn them. If you kill the beast, nothing respawns.

Yes, diamond dust on your weapon, and as many potions as you can quickly get in, -start with Swallow, Blizzard and/or Tawny owl if you have time. Do the ritual of power before you enter the cave where Abigail is.